Geothermal Heating & Cooling in Rockford, IL

What Is Geothermal Energy?

Geothermal energy comes from the natural heat stored beneath the Earth’s surface. A geothermal system taps into this energy to efficiently heat and cool your home. Using a geothermal heat pump and a network of specialized loops buried underground, it transfers heat between your home and the earth, providing year-round comfort while reducing energy costs.

How Does a Geothermal Heating & Cooling System Work?

Geothermal systems use renewable energy stored in the ground to maintain a comfortable indoor temperature 365 days a year. Because the ground stays at a relatively constant temperature throughout the seasons, geothermal systems move heat efficiently where it’s needed.

Winter: The geothermal heat pump extracts heat from the ground and transfers it indoors to keep your home cozy.

Summer: The system reverses the process, moving heat from your home into the cooler ground while circulating chilled air indoors.

This sustainable approach reduces energy bills, minimizes your environmental footprint, and provides one of the most efficient heating and cooling solutions available.

Why Choose Temperature Doctors for Geothermal Systems?

At Temperature Doctors Heating & Cooling Inc in Rockford, IL, we specialize in installing and maintaining geothermal systems that are reliable, efficient, and long-lasting. As a trusted local HVAC provider since 2006, we ensure your geothermal system delivers optimal performance, saving you money while keeping your home comfortable year-round.

We also help you take advantage of cash incentives and a 30% federal tax credit for geothermal installations.

Geothermal Heating & Cooling FAQs

What can geothermal systems be used for?
Geothermal systems can heat and cool homes or businesses. They can also supply hot water and heat floors in both residential and commercial buildings.

What are the primary components of a geothermal system?

1. Geothermal heat pump – uses the ground’s constant temperature to transfer heat.
2. Ground loops (geothermal loops) – underground pipes with water and antifreeze that move heat. Systems can be closed-loop (most common in Rockford) or open-loop. Closed-loop systems can be installed vertically, horizontally, or in a pond/lake.
3. Ductwork – distributes heating and cooling throughout your home.

How efficient is geothermal energy?
Geothermal is the most efficient way to heat and cool your home. While a typical high-efficiency furnace is around 96% efficient, a geothermal system can achieve 400% efficiency, because it transfers heat instead of producing it.

What does a geothermal system look like?
The heat pump looks like a traditional furnace and is usually installed where your current furnace or boiler is located. No outdoor condenser is required.

Do geothermal systems need maintenance?
Minimal maintenance is required:

• Replace filters regularly
• Check the thermostat for errors
• Inspect and clear the drain pan

How much does a geothermal system cost?
Geothermal systems have a higher upfront cost, often several times that of a traditional HVAC system.

How long does a geothermal system last?

• Heat pump: 20+ years
• Ground loops: 25–50 years

Do heat pumps use electricity?
Yes, a small amount of electricity powers the heat pump. The system won’t operate without a power source.

Are there rebates or tax credits for geothermal systems?

• Federal ITC credit: 30% off the system price
• ComEd rebates: Up to $6,000 per home; indoor unit replacements eligible for $800–$1,200

Does every HVAC contractor install geothermal systems?
No. Geothermal systems require specialized training and certifications. Temperature Doctors is a certified geothermal installer and member of the Geothermal Alliance of Illinois.

Benefits of Geothermal Heat Pumps

• Reduces energy use by 70–80%
• Controls indoor humidity
• Reliable year-round—earth never runs out of energy
• Small footprint
• Clean, renewable energy
• Quiet operation
• Long-lasting with minimal maintenance

Ready to Upgrade to Geothermal Comfort?

Take control of your home’s comfort and energy efficiency today! Call (815) 914-6197 or fill out our online form to schedule a consultation. Our experienced team at Temperature Doctors Heating & Cooling Inc in Rockford will guide you through every step, from choosing the right system to professional installation and ongoing maintenance.